A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies
Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parame...
Published in: | Geosciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2019
|
Subjects: | |
Online Access: | https://doi.org/10.3390/geosciences9070289 https://doaj.org/article/8eb92c7b2af948589c45884db74d898a |
id |
ftdoajarticles:oai:doaj.org/article:8eb92c7b2af948589c45884db74d898a |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:8eb92c7b2af948589c45884db74d898a 2023-05-15T14:03:57+02:00 A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies Dieter Tetzner Elizabeth Thomas Claire Allen 2019-06-01T00:00:00Z https://doi.org/10.3390/geosciences9070289 https://doaj.org/article/8eb92c7b2af948589c45884db74d898a EN eng MDPI AG https://www.mdpi.com/2076-3263/9/7/289 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9070289 https://doaj.org/article/8eb92c7b2af948589c45884db74d898a Geosciences, Vol 9, Iss 7, p 289 (2019) climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.3390/geosciences9070289 2022-12-31T00:31:29Z Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parameters using ERA-Interim and ERA5 reanalyses compared to in-situ observations from 13 automatic weather stations (AWS), located in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Both reanalyses seem to perform better in the escarpment area (>1000 m a.s.l) than on the coast. A significant improvement is observed in the performance of ERA5 over ERA-Interim. ERA5 is highly accurate, representing the magnitude and variability of near-surface air temperature and wind regimes. The higher spatial and temporal resolution provided by ERA5 reduces significantly the cold coastal biases identified in ERA-Interim and increases the accuracy representing the wind direction and wind speed in the escarpment. The slight underestimation in the wind speed obtained from the reanalyses could be attributed to an interplay of topographic factors and the effect of local wind regimes. Three sites in this region are highlighted for their potential for ice core studies. These sites are likely to provide accurate proxy calibrations for future palaeoclimatic reconstructions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica ice core Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Geosciences 9 7 289 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Geology QE1-996.5 |
spellingShingle |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Geology QE1-996.5 Dieter Tetzner Elizabeth Thomas Claire Allen A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
topic_facet |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Geology QE1-996.5 |
description |
Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parameters using ERA-Interim and ERA5 reanalyses compared to in-situ observations from 13 automatic weather stations (AWS), located in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Both reanalyses seem to perform better in the escarpment area (>1000 m a.s.l) than on the coast. A significant improvement is observed in the performance of ERA5 over ERA-Interim. ERA5 is highly accurate, representing the magnitude and variability of near-surface air temperature and wind regimes. The higher spatial and temporal resolution provided by ERA5 reduces significantly the cold coastal biases identified in ERA-Interim and increases the accuracy representing the wind direction and wind speed in the escarpment. The slight underestimation in the wind speed obtained from the reanalyses could be attributed to an interplay of topographic factors and the effect of local wind regimes. Three sites in this region are highlighted for their potential for ice core studies. These sites are likely to provide accurate proxy calibrations for future palaeoclimatic reconstructions. |
format |
Article in Journal/Newspaper |
author |
Dieter Tetzner Elizabeth Thomas Claire Allen |
author_facet |
Dieter Tetzner Elizabeth Thomas Claire Allen |
author_sort |
Dieter Tetzner |
title |
A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
title_short |
A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
title_full |
A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
title_fullStr |
A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
title_full_unstemmed |
A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
title_sort |
validation of era5 reanalysis data in the southern antarctic peninsula—ellsworth land region, and its implications for ice core studies |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/geosciences9070289 https://doaj.org/article/8eb92c7b2af948589c45884db74d898a |
long_lat |
ENVELOPE(-85.000,-85.000,-75.000,-75.000) |
geographic |
Antarctic Antarctic Peninsula Ellsworth Land |
geographic_facet |
Antarctic Antarctic Peninsula Ellsworth Land |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core |
op_source |
Geosciences, Vol 9, Iss 7, p 289 (2019) |
op_relation |
https://www.mdpi.com/2076-3263/9/7/289 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9070289 https://doaj.org/article/8eb92c7b2af948589c45884db74d898a |
op_doi |
https://doi.org/10.3390/geosciences9070289 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
7 |
container_start_page |
289 |
_version_ |
1766274883387392000 |